Created a Z=1" thick Door Panel Y=47.5; X=81.6 with SolidWorks, all flat with a few divots.Saved as STLImport to VcarveProWhen open roughing tool path it says the model Z=1.87, that the model rises .87" above material.

What's going on here and do I loose pattern height when adjusting to 1"?How do I control this?